i am thinking about putting a small sub in my stock 2001 tt 225 with the bose system to help with the bottom end. i want to keep the factory system and was wondering what anyone here has used?
thanks
steve

 

My A4 currently has an Infiniti sub mounted in the trunk. The rear channel plugs into the sub and has a separate volume **** mounted in the center console. The sub has adjustable levels of it's own. It sounds great, but I was actually thinking about selling it as I wanted more of an all-out stereo replacement.

http://www.crutchfield.com/app/produ...nity+subwoofer